The invention provides a vehicle-mounted camera image processing method and a vehicle-mounted camera image processing device. The method comprises the following steps of: S1, obtaining a current state of a vehicle; S2, processing a post-positioned camera image according to the current state of the vehicle; and S3, displaying a processed image. According to the vehicle-mounted camera image processing method and device, the image obtained by a camera can be processed in different modes under different driving states; a backing-up close-range image is displayed in a backing-up process and a driving long-range image is displayed in a driving process; a driving speed and a visual angle can be correlated, so that a function that only can camera can realize two image display modes is realized; system integration level is improved and the cost of a product is reduced; meanwhile, user experience is improved.